I just touted the ThinkGeek/Ion iCade arcade unit for iPad in my recent accessories roundup for the holidays, and if you were on the fence about buying one for yourself or as a gift, that decision might be a little easier. The geeky gift site is putting the unit on sale for US$59.99 during Black Friday, down about $40 from its usual price. That's a nice discount, and it might seal the deal if you haven't picked one up yet.
Touch Arcade has a really great page about the iCade, with lots of specs and information, and a pretty exhaustive list of games compatible with the device. It's made to work with Atari's Greatest Hits app, which is free on the App Store and offers up a bunch of Atari classics that already work with a joystick and buttons. But other developers and apps have also jumped on the iCade train, so the unit will work with all kinds of titles. For anyone who enjoys playing retro games on an iPad, this would make for an excellent gift under the tree later on this year.